Display module and display device

Abstract

A display module and a display device. The display module comprises a display area (100) and a bezel area (101), wherein the bezel area (101) surrounds the periphery of at least one side of the display area (100). The display module further comprises a display panel (1) and a cover plate (2), wherein the cover plate (2) covers a display side of the display panel (1). The display panel (1) comprises black matrices (121), and openings (K) are formed in a black matrix (121) of the bezel area (101). The cover plate (2) comprises a substrate (21) and a light-shielding layer (22), wherein the light-shielding layer (22) is located on the side of the substrate (21) close to the display panel (1), the light-shielding layer (22) is located in the bezel area (101), the light-shielding layer (22) at least surrounds the edge of the display area (100) on the side where the openings (K) are located, the light-shielding layer (22) is located on the side of the orthographic projection of each opening (K) on the substrate (21) away from the display area (100), the orthographic projections of the opening (K) and the light-shielding layer (22) on the substrate (21) do not overlap, the light-shielding layer (22) is provided with a notch (220) at the position corresponding to the openings (K), and the notch (220) is a recess in a direction moving away from the display area (100).

Description

Display modules and display devices Technical Field

[0001] This disclosure pertains to the field of display technology, specifically relating to a display module and a display device. Background Technology

[0002] Liquid crystal displays (LCDs) are currently widely favored due to their low power consumption, small size, low radiation, low cost, and long lifespan. Summary of the Invention

[0003] In a first aspect, embodiments of this disclosure provide a display module, comprising a display area and a border area, wherein the border area surrounds at least one periphery of the display area.

[0004] The display module also includes a display panel and a cover plate, the cover plate covering the display side of the display panel.

[0005] The display panel includes a black matrix, and an opening is provided in the black matrix of the border area;

[0006] The cover plate includes a substrate and a light-shielding layer, the light-shielding layer being located on the side of the substrate closer to the display panel.

[0007] The light-shielding layer is located in the frame area, and the light-shielding layer at least surrounds the edge of the display area on the side where the opening is located.

[0008] The light-shielding layer is located on the side of the opening's orthographic projection on the substrate that is away from the display area, and the orthographic projections of the opening and the light-shielding layer on the substrate do not overlap.

[0009] The light-shielding layer has a notch at the position corresponding to the opening, and the notch is a recess in the direction away from the display area.

[0010] In some embodiments, the cover plate further includes a partial light-transmitting layer located in the frame area, wherein the orthographic projection of the partial light-transmitting layer on the substrate is located on the side of the orthographic projection of the opening on the substrate that is closer to the orthographic projection of the notch on the substrate.

[0011] The orthographic projection of the portion of the light-transmitting layer onto the substrate at least covers the portion of the notch projected onto the substrate that is away from the display area.

[0012] The light-transmitting layer does not overlap with the orthographic projection of the opening on the substrate.

[0013] In some embodiments, the display panel further includes a second substrate.

[0014] The second substrate includes a second substrate and a first film layer, wherein the first film layer is located in the border region;

[0015] The first film layer is located on the side of the second substrate closer to the cover plate;

[0016] The black matrix is ​​located on the side of the second substrate away from the cover plate;

[0017] The orthographic projection of the first film layer on the substrate is located on the side of the orthographic projection of the opening on the substrate that is closer to the orthographic projection of the notch on the substrate;

[0018] The first film layer and the orthographic projection of the opening on the substrate do not overlap.

[0019] The orthographic projection of the first film layer on the substrate covers at least a portion of the area of ​​the notch that is orthographically projected onto the substrate and is located away from the display area.

[0020] In some embodiments, the first film layer is made of a partially transparent material.

[0021] The orthographic projection of the first film layer on the substrate covers the area between the orthographic projections of the opening and the notch on the substrate.

[0022] In some embodiments, the first film layer is made of an opaque material.

[0023] The orthographic projection of the first film layer on the substrate covers the local area between the orthographic projections of the opening and the notch on the substrate.

[0024] The first film layer is positioned such that its orthographic projection onto the substrate, near the display area, is spaced apart from the orthographic projection of the opening onto the substrate by a first distance.

[0025] The first spacing is the manufacturing tolerance of the first film layer.

[0026] In some embodiments, the display panel further includes a first substrate and a second substrate, wherein the first substrate and the second substrate are paired.

[0027] The cover plate is located on the side of the second substrate opposite to the first substrate.

[0028] The first substrate includes a first substrate and a photosensitive structure.

[0029] The photosensitive structure is located on the side of the first substrate closer to the second substrate, and the effective photosensitive area of ​​the photosensitive structure is located in the border area.

[0030] The second substrate includes a second base.

[0031] The black matrix is ​​located on the side of the second substrate closer to the first substrate;

[0032] The orthographic projection of the opening on the first substrate covers the orthographic projection of the effective photosensitive area of ​​the photosensitive structure on the first substrate.

[0033] In some embodiments, the distance between the side edge of the notch away from the display area and the side edge of the opening away from the display area projected onto the substrate ranges from 0.2 to 0.5 mm.

[0034] In some embodiments, the distance between the edge of the notch near the display area and the orthographic projection of the edge of the nearest opening on the substrate ranges from 0.2 to 0.5 mm.

[0035] In some embodiments, the distance between the side edge of the partial light-transmitting layer near the display area and the side edge of the opening away from the display area projected onto the substrate ranges from 0.13 to 0.15 mm.

[0036] The width of the portion of the light-transmitting layer located within the notch, along the direction away from the display area, ranges from 0.05 to 0.37 mm.

[0037] In some embodiments, the orthographic projection of the partial light-transmitting layer on the substrate covers the notch, and the width of the overlapping area of ​​the orthographic projection of the partial light-transmitting layer and the light-shielding layer surrounding the edge of the notch on the substrate is 0.3 mm or more.

[0038] In some embodiments, the display panel further includes a first substrate, and the first substrate and the second substrate are paired.

[0039] The cover plate is located on the side of the second substrate opposite to the first substrate.

[0040] The first substrate includes a first substrate and a photosensitive structure.

[0041] The photosensitive structure is located on the side of the first substrate closer to the second substrate, and the effective photosensitive area of ​​the photosensitive structure is located in the border area.

[0042] The black matrix is ​​located on the side of the second substrate closer to the first substrate;

[0043] The orthographic projection of the opening on the first substrate covers the orthographic projection of the effective photosensitive area of ​​the photosensitive structure on the first substrate;

[0044] The side boundary of the first film layer near the display area coincides with the orthographic projection of the side boundary of the opening away from the display area onto the substrate.

[0045] In some embodiments, the orthographic projection of the first film layer on the substrate covers the notch, and the width of the overlapping area of ​​the orthographic projection of the first film layer and the light-shielding layer surrounding the edge of the notch on the substrate is 0.13 mm or more.

[0046] In some embodiments, the light transmittance of the partial light-transmitting layer ranges from 65% to 85%.

[0047] In some embodiments, the second substrate further includes a color resist.

[0048] The color resist is located on the side of the black matrix closer to the first substrate.

[0049] The orthographic projection of the color resist in the border area onto the second substrate covers the orthographic projection of the opening onto the second substrate.

[0050] In some embodiments, the photosensitive structure includes a plurality of photosensitive units;

[0051] One photosensitive unit corresponds to one opening, and the plurality of photosensitive units correspond to a plurality of different openings;

[0052] The spacing between adjacent edges of adjacent openings is greater than 10 μm.

[0053] In some embodiments, one photosensitive unit corresponds to a color resist of one color, and the multiple photosensitive units correspond to different colors of color resists;

[0054] The color resistors include red, blue, and green color resistors.

[0055] The red color resist, the blue color resist, and the green color resist are arranged sequentially along the extension direction of the display area boundary line corresponding to the side of the frame area on which they are located;

[0056] The photosensitive unit corresponding to the red color resist, the photosensitive unit corresponding to the blue color resist, and the photosensitive unit corresponding to the green color resist are arranged sequentially along the extension direction of the display area boundary line corresponding to the frame area on their respective sides.

[0057] In some embodiments, the first substrate further includes at least one dummy photosensitive unit located in the border region and on the side of the first substrate closer to the second substrate.

[0058] The at least one dummy photosensitive unit is arranged sequentially with the photosensitive unit corresponding to the red color resist, the photosensitive unit corresponding to the blue color resist, and the photosensitive unit corresponding to the green color resist along the extension direction of the display area boundary line corresponding to the frame area on its side;

[0059] The orthographic projection of the black matrix onto the first substrate covers the effective photosensitive area of ​​the dummy photosensitive unit, and the orthographic projection of the color resist onto the first substrate does not overlap with the orthographic projection of the effective photosensitive area of ​​the dummy photosensitive unit.

[0060] In some embodiments, the effective photosensitive area of ​​the dummy photosensitive unit and the orthographic projection of the light-shielding layer on the substrate at least partially overlap;

[0061] Alternatively, the effective photosensitive area of ​​the dummy photosensitive unit does not overlap with the orthographic projection of the light-shielding layer on the substrate.

[0062] In some embodiments, the notch is mirror-symmetrical about the center line of the border area on its side;

[0063] The center line is perpendicular to the length direction of the border area on the side where the notch is located.

[0064] In some embodiments, the photosensitive unit includes a plurality of first photosensitive transistors, which are arranged sequentially along the extension direction of the display area boundary line corresponding to the frame area on their respective sides.

[0065] The virtual photosensitive unit includes a plurality of second photosensitive transistors, which are arranged sequentially along the extension direction of the display area boundary line corresponding to the frame area on the side where they are located.

[0066] The gates of the first photosensitive transistor and the second photosensitive transistor are electrically connected to the first signal line.

[0067] The first electrode of the first photosensitive transistor and the first electrode of the second photosensitive transistor are electrically connected to the second signal line.

[0068] The second electrode of the first photosensitive transistor in the photosensitive unit corresponding to the red color resist is electrically connected to the third signal line;

[0069] The second electrode of the first photosensitive transistor in the photosensitive unit corresponding to the blue color resist is electrically connected to the fourth signal line;

[0070] The second electrode of the first photosensitive transistor in the photosensitive unit corresponding to the green color resist is electrically connected to the fifth signal line;

[0071] The second electrode of the second photosensitive transistor is electrically connected to the sixth signal line.

[0072] Secondly, embodiments of this disclosure provide a display module, comprising a display area and a border area, wherein the border area surrounds at least one periphery of the display area.

[0073] The display module also includes a display panel and a cover plate, the cover plate covering the display side of the display panel.

[0074] The display panel includes a photosensitive structure, and the effective photosensitive area of ​​the photosensitive structure is located in the bezel area.

[0075] The cover plate includes a substrate and a light-shielding layer, the light-shielding layer being located on the side of the substrate closer to the display panel.

[0076] The light-shielding layer is located in the frame area, and the light-shielding layer at least surrounds the edge of the display area on the side where the photosensitive structure is located.

[0077] The light-shielding layer is located on the side of the effective photosensitive area of ​​the photosensitive structure that is projected onto the substrate away from the display area. The effective photosensitive area of ​​the photosensitive structure and the projected image of the light-shielding layer onto the substrate do not overlap.

[0078] The light-shielding layer has a notch at the position corresponding to the effective photosensitive area of ​​the photosensitive structure, and the notch is a recess in the direction away from the display area.

[0079] In some embodiments, the photosensitive structure includes a plurality of photosensitive units;

[0080] The plurality of photosensitive units are arranged sequentially along the extension direction of the display area boundary line corresponding to the frame area on their respective sides;

[0081] The plurality of photosensitive units are located at the middle or end of the boundary line of the display area on their respective sides.

[0082] In some embodiments, the shape of the middle portion of the display area boundary line corresponding to the frame area on the side where the photosensitive unit is located includes a straight line, a semi-circular arc, or a parabola.

[0083] The plurality of photosensitive units are located at the middle or end positions of the middle portion of the boundary line of the display area on their respective sides.

[0084] In some embodiments, the border area includes a binding side border area and a first side border area, the binding side border area and the first side border area being disposed opposite to each other;

[0085] The photosensitive structure is located in the first side frame area;

[0086] The display module further includes a dummy load circuit, an electrostatic discharge circuit, and a reference voltage circuit, at least located in the first side frame area.

[0087] The dummy load circuit, the electrostatic discharge circuit, the photosensitive structure, and the reference voltage circuit are arranged sequentially in a direction away from the display area.

[0088] Thirdly, embodiments of this disclosure provide a display device, which includes the aforementioned display module.

[0089] The display module provided in this embodiment, on the one hand, enables the light-shielding layer to avoid obstructing the effective photosensitive area of ​​the photosensitive structure due to manufacturing tolerances and cover plate bonding tolerances, thereby ensuring that the effective photosensitive area of ​​the photosensitive structure can normally sense external light (such as ambient light); on the other hand, the light-shielding layer does not significantly affect the overall visual appearance of the display module, such as the seamless black effect when the screen is off; furthermore, the light-shielding layer does not obstruct incident light with a large incident angle (such as incident light with an incident angle in the range of ±30° to ±80°) that illuminates the effective photosensitive area of ​​the photosensitive structure, thereby not affecting the reception of large-angle incident light by the effective photosensitive area of ​​the photosensitive structure, and thus ensuring that the sensing curve of the effective photosensitive area of ​​the photosensitive structure for incident light within a large angle range smoothly transitions with the change of the incident angle.

[0090] The display device provided in this embodiment, by employing the above-described display module, not only ensures that the effective photosensitive area of ​​the photosensitive structure in the display device can normally sense external light, but also ensures the overall visual appearance of the display device, and ensures that the sensing curve of the effective photosensitive area of ​​the photosensitive structure in the display device for incident light within a large angle range smoothly transitions with the change of the incident angle. Attached Figure Description

[0091] The accompanying drawings are provided to further illustrate the embodiments of this disclosure and form part of the specification. They are used together with the embodiments of this disclosure to explain the disclosure and do not constitute a limitation thereof. The above and other features and advantages will become more apparent to those skilled in the art from the detailed description of exemplary embodiments with reference to the accompanying drawings, in which:

[0092] Figure 1 is a schematic diagram of the circuit layout of the first side bezel area and the bonding side bezel area of ​​a liquid crystal display screen in the related technology.

[0093] Figure 2a is a schematic diagram of the test of ink blocking large-angle light incident on the photosensor in the related technology.

[0094] Figure 2b is a schematic diagram of the vertical rotation of the display screen during a test of how the ink in the related technology blocks large-angle light incident on the photosensor.

[0095] Figure 2c is a schematic diagram of the horizontal rotation of the display screen during a test of how the ink in the related technology blocks large-angle light incident on the photosensor.

[0096] Figure 3 shows the illuminance value change curves of the light sensor as the horizontal and vertical rotation angles of the display screen change in the related technology.

[0097] Figure 4a is a top view of the side frame area where the photosensitive structure of a display module is located in an embodiment of this disclosure.

[0098] Figure 4b is an enlarged top view of the location of the photosensitive structure in Figure 4a.

[0099] Figure 4c is a schematic cross-sectional view of the structure along the AA' section line in Figure 4b.

[0100] Figure 4d is a top view of the structure at the location of the photosensitive structure in an embodiment of this disclosure.

[0101] Figure 4e is a schematic diagram illustrating the calculation principle of the distance by which the light-shielding layer avoids the photosensitive structure in an embodiment of this disclosure.

[0102] Figure 5a is a top view of the side frame area where the photosensitive structure of another display module is located in an embodiment of this disclosure.

[0103] Figure 5b is an enlarged top view of the location of the photosensitive structure in Figure 5a.

[0104] Figure 5c is a schematic cross-sectional view of the structure along the BB' section line in Figure 5b.

[0105] Figure 6a is a graph showing the change in photosensitive illuminance of the photosensitive structure of the module as the incident angle of incident light changes, as shown in Figure 4c.

[0106] Figure 6b is a graph showing the change in photosensitive illuminance of the photosensitive structure of the module as the incident angle of incident light changes, as shown in Figure 5c.

[0107] Figure 7a is a top view of the side frame area where the photosensitive structure of another display module is located in an embodiment of this disclosure.

[0108] Figure 7b is a schematic cross-sectional view of a structure along the CC' section line in Figure 7a.

[0109] Figure 7c is a top view of the side frame area where the photosensitive structure of another display module is located in an embodiment of this disclosure.

[0110] Figure 7d is a schematic cross-sectional view of a structure along the DD' section line in Figure 7c.

[0111] Figure 8a is a schematic diagram of the distribution of the photosensitive structure in the side frame area of ​​an embodiment of this disclosure.

[0112] Figure 8b is a schematic diagram of another distribution of the photosensitive structure in its side frame area in an embodiment of this disclosure.

[0113] Figure 8c is a schematic diagram of another distribution of the photosensitive structure in the side frame area of ​​the present disclosure embodiment.

[0114] Figure 8d is a schematic diagram of another distribution of the photosensitive structure in the side frame area of ​​this disclosure embodiment.

[0115] Figure 8e is a schematic diagram of another distribution of the photosensitive structure in the side frame area of ​​this disclosure embodiment.

[0116] Figure 8f is a schematic diagram of another distribution of the photosensitive structure in the side frame area of ​​this disclosure embodiment.

[0117] Figure 9a is a top view of the photosensitive unit in an embodiment of this disclosure.

[0118] Figure 9b is a cross-sectional view of the first and second photosensitive transistors in an embodiment of this disclosure along the FF' section line in Figure 9a.

[0119] Figure 9c is a schematic diagram of the circuit connection between the photosensitive unit and the dummy photosensitive unit in an embodiment of this disclosure.

[0120] Figure 10 is a schematic diagram of the distribution of the binding side frame area and the first side frame area of ​​the display module and the circuits therein in an embodiment of this disclosure.

[0121] Figure 11a is an enlarged top view of the location of the photosensitive structure of another display module in an embodiment of this disclosure.

[0122] Figure 11b is a schematic cross-sectional view of the structure along the EE' section line in Figure 11a. Detailed Implementation

[0123] To enable those skilled in the art to better understand the technical solutions of the embodiments of this disclosure, a display module and display device provided by the embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0124] Embodiments of this disclosure will be described more fully below with reference to the accompanying drawings; however, the embodiments shown may be embodied in different forms and should not be construed as limited to the embodiments set forth in this disclosure. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will enable those skilled in the art to fully understand the scope of this disclosure.

[0125] This disclosure is not limited to the embodiments shown in the accompanying drawings, but includes modifications to the configuration based on the manufacturing process. Therefore, the areas illustrated in the drawings are schematic, and the shapes of the areas shown illustrate specific shapes of the areas, but are not intended to be limiting.

[0126] Currently, low-cost display products have become the mainstream demand for various terminals. Functional integration can reduce the number of hardware components in display products, thereby achieving cost savings. Based on this, related technologies integrate light-sensing devices into liquid crystal display products to realize the light-sensing function of the liquid crystal display product. According to the light-sensing results, the liquid crystal display product can flexibly adjust parameters such as screen brightness and contrast, thereby improving the display effect of the liquid crystal display product in different application scenarios and lighting environments.

[0127] In related technologies, referring to Figure 1, for HD (High Definition, resolution of 720P and above) and fHD (Fine High Definition, resolution of 900P) liquid crystal displays, a liquid crystal cell is formed by an array substrate (TFT) and a color filter substrate (CF), and a cover plate is fitted onto the display side of the liquid crystal cell. The cover plate includes a substrate and ink formed on the substrate near the liquid crystal cell. The ink is located at the four edges of the substrate and is used to cover the four bezel areas of the liquid crystal display. A light sensor is integrated into the liquid crystal display. The light sensor uses an amorphous silicon thin-film transistor (i.e., a-Si TFT) and is typically integrated into the first side bezel area (i.e., DPO side bezel) of the liquid crystal display, and is also integrated into the array substrate (TFT). The first side bezel area (i.e., DPO side bezel) is a side bezel area disposed opposite to the bonding side bezel area (i.e., DP side bezel) of the liquid crystal display. A driver chip (COG) and a flexible circuit (FPC) are integrated into the bonding side bezel area (i.e., DP side bezel) of the liquid crystal display.

[0128] Referring to Figure 1, in Scheme 2, the electrostatic discharge (ESD) circuit for releasing static electricity from the photosensor is located in the bonding side bezel area (i.e., the DP side bezel). This results in a relatively large width for the bonding side bezel area (e.g., 3.49 mm), which cannot ensure mass production levels for HD and fHD LCD displays. To reduce the width of the bonding side bezel area (i.e., the DP side bezel) to ensure mass production levels for HD and fHD LCD displays (e.g., a bonding side bezel width of 3.4 mm to ensure mass production levels), the setup in Scheme 1 should be adopted, whereby the electrostatic discharge (ESD) circuit for releasing static electricity from the photosensor is located in the first side bezel area (i.e., the DPO side bezel) (reducing the width of the bonding side bezel area by up to 0.09 mm). Simultaneously, the first side bezel area also includes a dummy load circuit and a reference voltage circuit (Vcom). The dummy load circuit is a circuit that stabilizes the output of the GOA (Gare Driver On Array) and includes components such as resistors and capacitors. The dummy load circuit is a circuit that can absorb power without producing actual physical effects. The reference voltage circuit provides a reference voltage signal to shield the surrounding liquid crystal electric field. The dummy load circuit, electrostatic discharge (ESD) circuit, and reference voltage circuit (Vcom) are all located in the TFT array substrate. As shown in Figure 1, within the first side bezel area, the dummy load circuit, ESD circuit, photosensor, and reference voltage circuit (Vcom) are arranged sequentially away from the display area (AA). This results in the photosensor being relatively far from the display area (AA) (e.g., approximately 0.24 mm away). Due to manufacturing tolerances in the ink (generally prepared via screen printing) and bonding tolerances when the cover plate forming the ink is bonded to the liquid crystal cell, when the photosensor is far from the display area (AA), it is relatively closer to the ink. This can easily cause the ink to obstruct the photosensor; therefore, the ink needs to avoid obstructing the photosensor. At the same time, if the ink is too far away from the display area in order to avoid the light sensor, the area covered by the ink in the bezel area will be relatively small, which will affect the overall visual appearance of the display screen, such as a poor all-black effect when the screen is off.

[0129] In addition, the obstruction of large-angle incident light by the ink on the light sensor needs to be considered. The incident angle range of large-angle incident light is ±30° to ±80°. In related technologies, the obstruction test of large-angle incident light by the ink on the light sensor is shown in Figures 2a, 2b, and 2c. The liquid crystal display screen 10 is fixed on a fixture that can rotate up, down, left, and right. The display screen 10 is illuminated by a parallel light source 13, and the illuminance value of the light sensor is recorded when the display screen 10 is rotated horizontally (X+ or X-) or vertically (Y+ or Y-) to different angles when the light source 13 is vertically illuminating it. Vertical rotation (Y+ or Y-) of the display screen 10 refers to the movement of the first side bezel area (the side bezel area where the light sensor is located) and the bonding side bezel area (the side bezel area opposite to the first side bezel area) in the Y+ and Y- directions, respectively. Horizontal rotation (X+ or X-) of the display screen 10 refers to the movement of the opposite side bezel areas of the display screen without light sensors in the X+ and X- directions, respectively. Referring to Figure 3, when the screen rotates 35° in the Y-direction, the illuminance value measured by the light sensor drops sharply. When the screen rotates in the Y+ direction, no sharp change in illuminance value occurs; instead, the illuminance value changes gradually with increasing incident angle. This is because when the screen rotates 35° in the Y-direction, the ink blocks the incident light at a larger incident angle, affecting the light sensor's reception of light at large incident angles.

[0130] How to make the illuminance curve of the light sensor, tested over a wide range of incident angles, smoothly transition with the change of incident angle is also a problem that needs to be solved.

[0131] To address the aforementioned problems in the disclosed technology, in a first aspect, embodiments of this disclosure provide a display module. Referring to Figures 4a, 4b, and 4c, the module includes a display area 100 and a border area 101. The border area 101 surrounds at least one side of the display area 100. The display module also includes a display panel 1 and a cover plate 2. The cover plate 2 covers the display side of the display panel 1. The display panel 1 includes a black matrix 121, and an opening K is formed in the black matrix 121 of the border area 101. The cover plate 2 includes a substrate 21. The light-shielding layer 22 is located on the side of the substrate 21 closer to the display panel 1. The light-shielding layer 22 is located in the frame area 101 and at least surrounds the edge of the display area 100 on the side where the opening K is located. The light-shielding layer 22 is located on the side of the orthographic projection of the opening K on the substrate 21 away from the display area 100. The orthographic projections of the opening K and the light-shielding layer 22 on the substrate 21 do not overlap. The light-shielding layer 22 has a notch 220 at the position corresponding to the opening K. The notch 220 is a recess in the direction away from the display area 100.

[0132] Secondly, this disclosure provides a display module, referring to Figures 4a, 4b, and 4c, which includes a display area 100 and a border area 101. The border area 101 surrounds at least one side of the display area 100. The display module also includes a display panel 1 and a cover plate 2. The cover plate 2 covers the display side of the display panel 1. The display panel 1 includes a photosensitive structure 3, and the effective photosensitive area of ​​the photosensitive structure 3 is located in the border area 101. The cover plate 2 includes a substrate 21 and a light-shielding layer 22, and the light-shielding layer 22 is located near the display side of the substrate 21. On one side of the display panel 1, the light-shielding layer 22 is located in the frame area 101, and the light-shielding layer 22 surrounds at least the edge of the display area 100 on the side where the photosensitive structure 3 is located. The light-shielding layer 22 is located on the side away from the display area 100 from the orthographic projection of the effective photosensitive area of ​​the photosensitive structure 3 on the substrate 21. The orthographic projection of the effective photosensitive area of ​​the photosensitive structure 3 and the light-shielding layer 22 on the substrate 21 do not overlap. The light-shielding layer 22 has a notch 220 at the position corresponding to the effective photosensitive area of ​​the photosensitive structure 3. The notch 220 is a recess in the direction away from the display area 100.

[0133] In some embodiments, the display panel 1 further includes a first substrate 11 and a second substrate 12, the first substrate 11 and the second substrate 12 being paired; a cover plate 2 is located on the side of the second substrate 12 opposite to the first substrate 11, the first substrate 11 includes a first base 110 and a photosensitive structure 3, the photosensitive structure 3 is located on the side of the first base 110 near the second substrate 12, and the effective photosensitive area of ​​the photosensitive structure 3 is located in the frame area 101, the second substrate 12 includes a second base 120, and a black matrix 121 is located on the side of the second base 120 near the first substrate 11; the orthographic projection of the opening K on the first base 110 covers the orthographic projection of the effective photosensitive area of ​​the photosensitive structure 3 on the first base 110.

[0134] In this embodiment, the effective photosensitive area of ​​the photosensitive structure 3 can sense ambient light and convert it into electrical signals, which are then provided to the display module. The display module adjusts its display brightness and contrast parameters according to the intensity of the ambient light, thereby improving the display effect of the display module in different application scenarios and lighting environments. In this embodiment, the effective photosensitive area of ​​the photosensitive structure 3 is exposed at the opening K, so the area of ​​the opening K can be defined as the effective photosensitive area.

[0135] The photosensitive structure 3 can be a photosensitive thin-film transistor. The light-shielding layer 22 can be made of ink, which can block the bezel area 101 of the display module, thereby improving the visual appearance of the display module, such as the all-black effect when the display module is off. It should be noted that as long as the effective photosensitive area of ​​the photosensitive structure 3 and the orthographic projection of the light-shielding layer 22 on the substrate 21 do not overlap, it is acceptable. For example, if the channel area of ​​the photosensitive thin-film transistor is its effective photosensitive area, it is acceptable as long as the channel area of ​​the photosensitive thin-film transistor and the orthographic projection of the light-shielding layer 22 on the substrate 21 do not overlap.

[0136] In this embodiment, by recessing the light-shielding layer 22 at the location corresponding to the opening K in a direction away from the display area 100 to form a notch 220, on the one hand, the light-shielding layer 22 can avoid the effective photosensitive area of ​​the photosensitive structure 3, preventing the light-shielding layer 22 from blocking the effective photosensitive area of ​​the photosensitive structure 3 due to manufacturing tolerances and the bonding tolerances of the cover plate 2, thereby ensuring that the effective photosensitive area of ​​the photosensitive structure 3 can normally sense external light (such as ambient light); on the other hand, the notch 220 formed by the local recess of the light-shielding layer 22 at the location corresponding to the opening K will basically not affect The light-shielding layer 22 does not affect the overall visual appearance of the display module, such as the seamless black effect when the screen is off. Furthermore, the light-shielding layer 22 does not block incident light with a large incident angle (such as incident light with an incident angle in the range of ±30° to ±80°) that is irradiating the effective photosensitive area of ​​the photosensitive structure 3. Therefore, it does not affect the reception of incident light with a large incident angle by the effective photosensitive area of ​​the photosensitive structure 3, and thus ensures that the sensing curve of the effective photosensitive area of ​​the photosensitive structure 3 for incident light within a large incident angle range transitions smoothly with the change of the incident angle.

[0137] In some embodiments, referring to Figures 4c and 4d, the display module further includes an optically transparent adhesive layer 4 located between the cover plate 2 and the display panel 1; the first substrate 11 further includes a first polarizer 111 located on the side of the first substrate 110 opposite to the second substrate 12, and the first polarizer 111 extends from the display area 100 to the border area 101; the second substrate 12 further includes a color resist 122 and a second polarizer 123, the black matrix 121 and the color resist 122 are stacked sequentially on the side of the second substrate 120 near the first substrate 11, and the black matrix 121 and the color resist 122 are located in the display area 100 and the border area 101; the second polarizer 123 is located on the side of the second substrate 120 opposite to the first substrate 11; the orthographic projection of the color resist 122 in the border area 101 onto the second substrate 120 covers the orthographic projection of the opening K onto the second substrate 120.

[0138] In some embodiments, referring to FIG4c, after the first substrate 11 and the second substrate 12 are assembled, their four edges are sealed with sealing adhesive 5. The first substrate 11 and the second substrate 12 form a cell gap, which is filled with liquid crystal 6. The display module also includes a backlight module 14, located on the side of the display panel 1 away from the cover plate 2, for providing backlight for the display of the display panel 1.

[0139] In some embodiments, the black matrix 121 located in the display area 100 and the black matrix 121 located in the border area 101 are prepared by a single preparation process, and the color resist 122 located in the display area 100 and the color resist 122 located in the border area 101 are prepared by a single preparation process.

[0140] In some embodiments, the distance M between the orthographic projection of the side edge of the notch 220 away from the display area 100 and the side edge of the opening K away from the display area 100 onto the substrate 21 ranges from 0.2 to 0.5 mm.

[0141] In some embodiments, referring to FIG4e, the manufacturing tolerance (screen printing preparation) of the light-shielding layer 22 is ±0.1mm, then the single-sided tolerance of the light-shielding layer 22 is ±0.05mm, the bonding equipment accuracy of the cover plate 2 is ±0.1mm, and the tolerance of the clearance step height E of the light-shielding layer 22 at the notch 220 (referring to the distance between the edge of the notch 220 away from the display area 100 and the edge of the area of ​​the light-shielding layer 22 without the notch closer to the display area 100) is ±0.07mm. Therefore, the cumulative tolerance of the light-shielding layer 22 is:

[0142] C = sqrt(0.05*0.05 + 0.1*0.1 + 0.07*0.07) = 0.13mm. Considering that bonding the cover plate 2 to the display panel 1 achieves a Cpk of 1.33 (a measure of process capability, indicating the ability of the production process to meet quality requirements; a higher Cpk indicates greater stability), after bonding the cover plate 2 to the display panel 1, the light-shielding layer 22 avoids the opening K in the black matrix 121 through a partial notch 220. Since the effective photosensitive area of ​​the photosensitive structure 3 is exposed at the opening K, the light-shielding layer 22 can further avoid the effective photosensitive area of ​​the photosensitive structure 3 through the partial notch 220. The edge of the notch 220 away from the display area 100 needs to be extended outward by at least 0.13-0.15mm, that is, the distance between the orthogonal projection of the edge of the notch 220 away from the display area 100 and the edge of the opening K away from the display area 100 on the substrate 21 is at least 0.13-0.15mm.

[0143] If the distance between the side edge of the notch 220 away from the display area 100 and the side edge of the opening K away from the display area 100 on the substrate 21 is designed to be 0.15mm, it will not meet the requirement that the effective photosensitive area of ​​the photosensitive structure 3 smoothly transitions the sensing curve of the incident light within a large incident angle range (±30°~±80°) with the change of the incident angle.

[0144] To ensure a smooth transition of the sensing curve of the effective photosensitive area of ​​the photosensitive structure 3 with respect to incident light within a wide incident angle range (±30°~±80°), it is necessary not only to consider the fabrication tolerance of the light-shielding layer 22 and the bonding tolerance of the cover plate 2, but also to ensure that the incident light at a wide incident angle, after being refracted by certain film layers in the display panel 1, can still illuminate the effective photosensitive area of ​​the photosensitive structure 3. Specifically, the distance between the orthographic projection of the edge of the notch 220 away from the display area 100 and the edge of the opening K away from the display area 100 onto the substrate 21 is... The distance is further expanded from at least 0.13-0.15mm. The theoretical calculation is shown in Figure 4e. The incident angle is θ, the refraction angle is α, and A is the distance between the plane where the light-shielding layer 22 is located and the plane where the effective photosensitive area of ​​the photosensitive structure 3 is located. For example, A = the thickness of the optically transparent adhesive layer 4 + the thickness of the second substrate 12. B = the distance between the edge of the effective photosensitive area (i.e., the opening K) of the photosensitive structure 3 away from the display area 100 and the edge of the light-shielding layer 22 near the display area 100. The incident light is refracted when it enters the display module as shown in Figure 4e. For example, the refractive indices of the cover plate 2, the optically transparent adhesive layer 4 and the second substrate 12 are close, and are all calculated according to a refractive index of 1.5. When the external light enters the display module from the air, according to the refraction principle 1*sinθ=1.5*sinα… formula (1), tanα=B / A… formula (2).

[0145] From the above formulas (1) and (2), it can be seen that if the incident angle θ is known, the distance D = B + C that the light-shielding layer 22 needs to avoid from the effective photosensitive area of ​​the photosensitive structure 3 can be calculated; B = A * tanα = A * tan(arcsin(sinθ / 1.5)); then D = A * tan(arcsin(sinθ / 1.5)) + C... formula (3).

[0146] To achieve a smooth transition of the sensing curve of the effective photosensitive area of ​​the photosensitive structure 3 to the incident light within the range of ±30° to ±80°, the design of the light-shielding layer 22 to avoid the effective photosensitive area of ​​the photosensitive structure 3 can be differentiated according to different requirements. Considering the corresponding situations when the A value is different, the A value ranges from 0.316 to 0.394 mm, that is, Amax = 0.394 mm, Amin = 0.316 mm.

[0147] If the incident angle of the incident light is ±30°, i.e. θ=30°, the distance that the light-shielding layer 22 needs to avoid from the effective photosensitive area of ​​the photosensitive structure 3 can be calculated according to formula (3):

[0148] D1 = 0.394 * tan(19.4712°) + 0.13 = 0.271… Formula (4); D1 is the maximum distance that the light-shielding layer 22 needs to avoid the effective photosensitive area of ​​the photosensitive structure 3 when the incident angle is ±30°.

[0149] D2 = 0.316 * tan(19.4712°) + 0.13 = 0.244… Formula (5); D2 is the minimum distance that the light-shielding layer 22 needs to avoid the effective photosensitive area of ​​the photosensitive structure 3 when the incident angle is ±30°.

[0150] If the incident angle of the incident light is ±80°, i.e. θ=80°, the distance that the light-shielding layer 22 needs to avoid from the effective photosensitive area of ​​the photosensitive structure 3 can be calculated according to formula (3):

[0151] D1' = 0.394 * tan(41.0364°) + 0.13 = 0.4748... Formula (6); D1' is the maximum distance that the light-shielding layer 22 needs to avoid the effective photosensitive area of ​​the photosensitive structure 3 when the incident angle is ±80°.

[0152] D2' = 0.316 * tan(41.0364°) + 0.13 = 0.4070... Formula (7); D2' is the minimum distance that the light-shielding layer 22 needs to avoid the effective photosensitive area of ​​the photosensitive structure 3 when the incident angle is ±80°.

[0153] As can be calculated from the above formulas (4)-(7), when the distance M between the side edge of the notch 220 away from the display area 100 and the side edge of the opening K away from the display area 100 on the substrate 21 is in the range of 0.244 to 0.4748 mm (after rounding, the value of distance M is in the range of 0.2 to 0.5 mm), it can both prevent the light-shielding layer 22 from blocking the effective photosensitive area of ​​the photosensitive structure 3 due to the manufacturing tolerance and the bonding tolerance of the cover plate 2, and ensure that the effective photosensitive area of ​​the photosensitive structure 3 can normally sense external light (such as ambient light); and ensure that the sensing curve of the effective photosensitive area of ​​the photosensitive structure 3 for incident light in the range of large incident angle (±30° to ±80°) transitions smoothly with the change of incident angle.

[0154] In some embodiments, referring to Figures 4a and 4b, the distance N between the orthographic projection of the edge of the notch 220 near the display area 100 and the edge of the nearest opening K on the substrate 21 ranges from 0.2 to 0.5 mm. This also avoids the light-shielding layer 22 from blocking the effective photosensitive area of ​​the photosensitive structure 3 due to manufacturing tolerances and the bonding tolerances of the cover plate 2, ensuring that the effective photosensitive area of ​​the photosensitive structure 3 can normally sense external light (such as ambient light); and also ensures that the sensing curve of the effective photosensitive area of ​​the photosensitive structure 3 for incident light within a large incident angle range (±30° to ±80°) transitions smoothly with the change of the incident angle.

[0155] In some embodiments, the orthographic projection of the notch 220 onto the substrate 21 includes at least one rounded corner, the radius R of which is greater than or equal to 0.2 mm. This avoids defects such as oil accumulation or missing teeth at the edge of the notch 220 when the light-shielding layer 22 is formed by screen printing, thereby preventing the light-shielding layer 22 at the edge of the notch 220 from blocking the effective photosensitive area of ​​the photosensitive structure 3.

[0156] In some embodiments, referring to Figures 5a, 5b and 5c, the cover plate 2 further includes a partial light-transmitting layer 23 located in the frame area 101. The orthographic projection of the partial light-transmitting layer 23 on the substrate 21 is at least located on the side of the orthographic projection of the opening K on the substrate 21 that is close to the orthographic projection of the notch 220 on the substrate 21. The orthographic projection of the partial light-transmitting layer 23 on the substrate 21 at least covers the portion of the orthographic projection of the notch 220 on the substrate 21 that is away from the display area 100. The partial light-transmitting layer 23 does not overlap with the orthographic projection of the opening K on the substrate 21.

[0157] In some embodiments, a portion of the light-transmitting layer 23 is located on the side of the light-shielding layer 22 facing away from the substrate 21. This ensures that the light-transmitting layer 23 and the side of the light-shielding layer 22 closest to the light-emitting surface are on the same horizontal plane, avoiding any adverse effects on the appearance of the display screen.

[0158] The light transmittance of the partially transparent layer 23 ranges from 65% to 85%. For example, the transmittance of the partially transparent layer 23 for light with a wavelength of 550 nm ranges from 65% to 85%. In some embodiments, the partially transparent layer 23 may be made of semi-transparent ink.

[0159] By providing a partial light-transmitting layer 23 in the cover plate 2, its orthographic projection on the substrate 21 is at least located on the side of the orthographic projection of the opening K on the substrate 21 closest to the orthographic projection of the notch 220 on the substrate 21. The partial light-transmitting layer 23 can at least cover the area of ​​the notch 220 between the light-shielding layer 22 and the orthographic projection of the opening K on the substrate 21. This creates a transition in the overall black effect along the path from the light-shielding layer 22 to the effective photosensitive area of ​​the photosensitive structure 3, thus improving the display. The appearance and visual effect of the module are improved, such as the integrated black effect of the display module when the screen is off; at the same time, the partial light-transmitting layer 23 allows most of the incident light to pass through, so as not to completely block the incident light with a large incident angle (such as incident light with an incident angle in the range of ±30° to ±80°) that illuminates the effective photosensitive area of ​​the photosensitive structure 3. Therefore, it will not affect the reception of incident light with a large incident angle by the effective photosensitive area of ​​the photosensitive structure 3. Ultimately, it can ensure that the sensing curve of the effective photosensitive area of ​​the photosensitive structure 3 for incident light in the large incident angle range transitions smoothly with the change of incident angle.

[0160] In some embodiments, the distance P between the orthographic projection of the side edge of the partial light-transmitting layer 23 near the display area 100 and the side edge of the opening K away from the display area 100 on the substrate 21 ranges from 0.13 to 0.15 mm; the width Q of the portion of the partial light-transmitting layer 23 located within the notch 220 in the direction away from the display area 100 ranges from 0.05 to 0.37 mm.

[0161] This configuration ensures that incident light with an incident angle of ±30° to ±80° is not blocked by the light-shielding layer 22 and can enter the effective photosensitive area of ​​the photosensitive structure 3. This does not affect the reception of incident light with a large incident angle by the effective photosensitive area of ​​the photosensitive structure 3, and thus ensures that the sensing curve of the effective photosensitive area of ​​the photosensitive structure 3 for incident light within a large incident angle range transitions smoothly with the change of the incident angle.

[0162] In related technologies, according to the test diagram of the ink on the large incident angle light incident on the effective photosensitive area of ​​the photosensitive sensor, when the light is incident at a 0° angle, the illuminance value of the incident light measured by the photosensitive sensor is 200. When the light is incident at a ±50° angle (the angle between the incident light and the normal to the light-emitting surface of the display panel 1 is ±50°), the illuminance value of the incident light measured by the photosensitive sensor is 140. In this embodiment, by setting the distance P and width Q of the partially transparent layer 23 as described above, the incident light with an incident angle of ±80° can be allowed to enter the effective photosensitive area of ​​the photosensitive structure 3 without being blocked by the light-shielding layer 22, and the illuminance value of the incident light with an incident angle of ±50° measured by the photosensitive structure 3 can reach half the illuminance value of the incident light with an incident angle of 0°.

[0163] In some embodiments, the orthographic projection of the partial light-transmitting layer 23 onto the substrate 21 covers the notch 220, and the width of the overlapping area of ​​the orthographic projections of the partial light-transmitting layer 23 and the light-shielding layer 22 surrounding the edge of the notch 220 onto the substrate 21 is 0.3 mm or more. This ensures, on the one hand, that there is no gap between the partial light-transmitting layer 23 and the light-shielding layer 22, thereby improving the visual appearance of the display module; on the other hand, since the light-shielding layer 22 is screen-printed on the substrate 21 first, and then the partial light-transmitting layer 23 is screen-printed, with the light-shielding layer 22 using light-shielding ink and the partial light-transmitting layer 23 using semi-transparent ink, and the ink overprinting capability being 0.3 mm, this ensures that the screen-printing of the partial light-transmitting layer 23 is smooth, and the edges of the partial light-transmitting layer 23 are less prone to defects.

[0164] In some embodiments, the thickness of the light-transmitting layer 23 ranges from 3 to 7 μm.

[0165] In some embodiments, referring to Figures 6a and 6b, Figure 6a is a curve showing the change in illuminance of the photosensitive structure 3 of the display module as the incident angle of incident light changes in Figure 4c, and Figure 6b is a curve showing the change in illuminance of the photosensitive structure 3 of the display module as the incident angle of incident light changes in Figure 5c; in the display module structure of Figure 4c, the illuminance of the photosensitive structure 3 is 250-300 lux when the incident angle of incident light is 45° to 50°; in the display module structure of Figure 5c, the illuminance of the photosensitive structure 3 is 210-240 lux when the incident angle of incident light is 45° to 50°, and the curve showing the change in illuminance of the photosensitive structure 3 as the incident angle of incident light obtained by testing is still a smooth transition. If the illuminance value of the photosensitive structure 3 decreases to approximately 150 lux when the incident light angle is 50°, the curve of the illuminance of the photosensitive structure 3 changing with the incident light angle will exhibit an abrupt change, and the corresponding curve will not be smooth. The transmittance value corresponding to an illuminance of 150 lux is approximately 150 / 250 = 60%. Therefore, it is necessary to set the transmittance range of a portion of the light-transmitting layer 23 to 65%-85%.

[0166] In some embodiments, referring to Figures 7a and 7b, based on the module structure shown in Figure 4c, the display panel 1 further includes a second substrate 12. The second substrate 12 includes a second base 120 and a first film layer 124. The first film layer 124 is located in the border area 101. The first film layer 124 is located on the side of the second base 120 near the cover plate 2, and the black matrix 121 is located on the side of the second base 120 away from the cover plate 2. The orthographic projection of the first film layer 124 on the substrate 21 is located on the side of the orthographic projection of the opening K on the substrate 21 near the orthographic projection of the notch 220 on the substrate 21. The first film layer 124 and the orthographic projection of the opening K on the substrate 21 do not overlap, and the orthographic projection of the first film layer 124 on the substrate 21 covers at least a portion of the area of ​​the orthographic projection of the notch 220 on the substrate 21 away from the display area 100.

[0167] In some embodiments, the display panel 1 further includes a first substrate 11, and the first substrate 11 and the second substrate 12 are paired; the cover plate 2 is located on the side of the second substrate 12 away from the first substrate 11, the first substrate 11 includes a first base 110 and a photosensitive structure 3, the photosensitive structure 3 is located on the side of the first base 110 near the second substrate 12, and the effective photosensitive area of ​​the photosensitive structure 3 is located in the border area 101, and the black matrix 121 is located on the side of the second base 120 near the first substrate 11; the orthographic projection of the opening K on the first base 110 covers the orthographic projection of the effective photosensitive area of ​​the photosensitive structure 3 on the first base 110; the orthographic projection of the side boundary of the first film layer 124 near the display area 100 and the side boundary of the opening K away from the display area 100 on the substrate 21 coincides.

[0168] In some embodiments, the first film layer 124 is made of a partially transparent material, such as a semi-transparent ink, and the orthographic projection of the first film layer 124 on the substrate 21 covers the area between the orthographic projections of the opening K and the notch 220 on the substrate 21.

[0169] In some embodiments, the light transmittance of the first film layer 124 ranges from 65% to 85%.

[0170] By providing a partially light-transmitting first film layer 124 on the side of the second substrate 120 away from the cover plate 2 or on the side of the second substrate 120 close to the cover plate 2, its orthographic projection on the substrate 21 is located on the side of the orthographic projection of the opening K on the substrate 21 close to the orthographic projection of the notch 220 on the substrate 21. The partially light-transmitting layer 23 can cover the area of ​​the notch 220 between the light-shielding layer 22 and the orthographic projection of the opening K on the substrate 21, thereby creating a transition in the overall black effect of the path area from the light-shielding layer 22 to the effective photosensitive area of ​​the photosensitive structure 3, that is, creating a transition in the appearance of the path area from the light-shielding layer 22 to the effective photosensitive area of ​​the photosensitive structure 3, thereby improving the appearance. The appearance and visual effect of the display module are improved, such as the enhanced all-black effect when the screen is off. At the same time, since the first film layer 124 is directly disposed on the second substrate 120, the first film layer 124 can be regarded as part of the second substrate 12. It will not completely block incident light with a large incident angle (such as incident light with an incident angle in the range of ±30° to ±80°) that irradiates the effective photosensitive area of ​​the photosensitive structure 3. Therefore, it will not affect the reception of incident light with a large incident angle by the effective photosensitive area of ​​the photosensitive structure 3. Ultimately, it can ensure that the sensing curve of the effective photosensitive area of ​​the photosensitive structure 3 for incident light in the large incident angle range transitions smoothly with the change of the incident angle.

[0171] Since the first film layer 124, which uses partially transparent material, partially covers the opening K due to manufacturing tolerances, it will not significantly affect the reception of incident light by the effective photosensitive area of ​​the photosensitive structure 3. Therefore, in this embodiment, the adjacent edges of the first film layer 124 and the opening K are designed to be flush. This allows for a smooth transition of the black effect along the path from the light-shielding layer 22 to the effective photosensitive area of ​​the photosensitive structure 3, thus improving the visual appearance of the display module. At the same time, it does not obscure part of the opening K, preventing the effective photosensitive area of ​​the photosensitive structure 3 from being blocked.

[0172] In some embodiments, referring to Figures 7c and 7d, the first film layer 124 is made of an opaque material, such as a light-shielding ink. The orthographic projection of the first film layer 124 on the substrate 21 covers a local area between the orthographic projections of the opening K and the notch 220 on the substrate 21. The edge of the orthographic projection of the first film layer 124 on the substrate 21 near the display area 100 is spaced apart from the orthographic projection of the opening K on the substrate 21 by a first spacing S, where the first spacing S is the manufacturing tolerance of the first film layer 124.

[0173] For example, the first spacing S is the manufacturing tolerance of the light-shielding ink, which is ±0.1 mm. Here, we only need to consider the manufacturing tolerance of the first film layer 124. The first film layer 124 is directly manufactured on the second substrate 120, and there is no need to consider the bonding tolerance of the first film layer 124.

[0174] In some embodiments, referring to Figures 7a-7d, the display module further includes an optically transparent adhesive layer 4 located between the cover plate 2 and the display panel 1; the first substrate 11 further includes a first polarizer 111, the first polarizer 111 being located on the side of the first substrate 110 opposite to the second substrate 12, the first polarizer 111 extending from the display area 100 to the frame area 101; the second substrate 12 further includes a color resist 122 and a second polarizer 123, the black matrix 121 and the color resist 122 being stacked sequentially on the side of the second substrate 120 near the first substrate 11, the black matrix 121 and the color resist 122 being located in both the display area 100 and the frame area 101; the second polarizer 123 being located on the side of the first film layer 124 opposite to the second substrate 120; the orthographic projection of the color resist 122 in the frame area 101 onto the second substrate 120 covers the orthographic projection of the opening K onto the second substrate 120.

[0175] In some embodiments, the orthographic projection of the first film layer 124 on the substrate 21 covers the notch 220, and the width of the overlapping area of ​​the orthographic projection of the first film layer 124 and the light-shielding layer 22 surrounding the edge of the notch 220 on the substrate 21 is 0.13 mm or more. Since the light-shielding layer 22 is disposed in the cover plate 2, and the bonding tolerance of the cover plate 2 is 0.13 to 0.15 mm, setting the width of the overlapping area of ​​the orthographic projection of the first film layer 124 and the notch 220 on the substrate 21 to 0.13 mm or more can ensure that there is no gap between the first film layer 124 and the light-shielding layer 22 after the cover plate 2 and the display panel 1 are assembled, thereby improving the visual appearance of the display module.

[0176] In some embodiments, referring to Figures 8a, 8b, 8c and 8d, the photosensitive structure 3 includes a plurality of photosensitive units 30; the plurality of photosensitive units 30 are arranged sequentially along the extension direction of the boundary line L of the display area 100 corresponding to their respective side frame area 101; the plurality of photosensitive units 30 are located at the middle position or the end position of the boundary line L of the display area 100 corresponding to their respective side frame area 101.

[0177] In some embodiments, referring to Figures 8a and 8b, the extension direction of the boundary line L of the display area 100 corresponding to the side bezel area 101 where the photosensitive unit 30 is located is a straight line. If the display module is a punch-hole screen, a punch-hole is formed within the display area 100 of the display module, and the camera device 15 is placed within the punch-hole. The extension direction of the boundary line L of the display area 100 corresponding to the side bezel area 101 where the photosensitive unit 30 is located in the punch-hole screen is a straight line. Referring to Figures 8c and 8d, the extension direction of the boundary line L of the display area 100 corresponding to the side bezel area 101 where the photosensitive unit 30 is located is a teardrop-shaped arc. If the display module is a teardrop screen, the extension direction of the boundary line L of the display area 100 corresponding to the side bezel area 101 where the photosensitive unit 30 is located in the teardrop-shaped arc is a teardrop-shaped arc, and the camera device 15 is placed in the non-display area enclosed by the teardrop-shaped arc.

[0178] In some embodiments, referring to Figures 8a, 8b, 8c and 8d, the shape of the middle portion of the boundary line L of the display area 100 corresponding to the side frame area 101 where the photosensitive unit 30 is located includes a straight line, a semi-circular arc, or a parabola. The multiple photosensitive units 30 are located at the middle position or the end position of the middle portion of the boundary line of the side display area 100 where they are located.

[0179] In some embodiments, referring to Figures 8a, 8b, 8c and 8d, one photosensitive unit 30 corresponds to one opening K, and multiple photosensitive units 30 correspond to multiple different openings K; the spacing m between adjacent edges of adjacent openings K is greater than 10 μm.

[0180] In some embodiments, referring to Figures 8a, 8b, 8c, and 8d, one photosensitive unit 30 corresponds to a color resist 122 of one color, and multiple photosensitive units 30 correspond to different colors of color resists 122. The color resists 122 include a red color resist R, a blue color resist B, and a green color resist G, arranged sequentially along the extension direction of the boundary line L of the display area 100 corresponding to their respective side bezel areas 101. The photosensitive units 30 corresponding to the red color resist R, the blue color resist B, and the green color resist G are arranged sequentially along the extension direction of the boundary line L of the display area 100 corresponding to their respective side bezel areas 101. This arrangement of the photosensitive units 30 improves the accuracy of sensing external light in the effective photosensitive area of ​​the entire photosensitive structure 3, thereby enhancing the display module's ability to adjust its display brightness and contrast based on the sensing results of the photosensitive structure 3.

[0181] In some embodiments, an external light source illuminates the photosensitive unit 30 corresponding to the red color resist R, the blue color resist B, and the green color resist G. The light emitted by this light source has different proportions of blue, green, and red light. The photosensitive unit 30 corresponding to the red color resist R receives the red light from this light source, the photosensitive unit 30 corresponding to the blue color resist B receives the blue light from this light source, and the photosensitive unit 30 corresponding to the green color resist G receives the green light from this light source. At the same time, the photosensitive unit 30 corresponding to the green color resist G can also detect the ambient light brightness. The voltage and current values ​​detected by each of the three photosensitive units 30 represent the proportions of red, blue, and green light in the illumination from the external light source. In this way, the color temperature of the external light source can be calculated, so as to adjust the display brightness and contrast parameters of the display module accordingly, thereby improving the display effect of the display module.

[0182] In some embodiments, referring to Figures 8a, 8b, 8c and 8d, the first substrate 11 further includes at least one dummy photosensitive unit 31 located in the border area 101 and on the side of the first substrate 110 near the second substrate 12. The at least one dummy photosensitive unit 31 is arranged sequentially with the photosensitive unit 30 corresponding to the red color resist R, the photosensitive unit 30 corresponding to the blue color resist B and the photosensitive unit 30 corresponding to the green color resist G along the extension direction of the boundary line L of the display area 100 corresponding to the side border area 101 where it is located. The orthographic projection of the black matrix 121 on the first substrate 110 covers the effective photosensitive area of ​​the dummy photosensitive unit 31, and the orthographic projection of the color resist 122 and the effective photosensitive area of ​​the dummy photosensitive unit 31 on the first substrate 110 does not overlap.

[0183] Both the dummy photosensitive unit 31 and the photosensitive unit 30 can be photoelectric conversion thin film transistors. Due to the obstruction of the black matrix 121, the effective photosensitive area of ​​the dummy photosensitive unit 31 cannot receive external light source illumination. Its sensing result is only used as a reference for the sensing result of the photosensitive unit 30. That is, the photosensitive signal of the photosensitive unit 30 is used to compare with the unsensitized signal of the dummy photosensitive unit 31 in order to provide a correction reference for the interference of other ambient light on the display brightness of the display module.

[0184] In some embodiments, the effective photosensitive area of ​​the dummy photosensitive unit 31 and the orthographic projection of the light-shielding layer 22 on the substrate 21 at least partially overlap; or, the effective photosensitive area of ​​the dummy photosensitive unit 31 and the orthographic projection of the light-shielding layer 22 on the substrate 21 do not overlap. That is, the light-shielding layer 22 may or may not avoid the effective photosensitive area of ​​the dummy photosensitive unit 31. If the light-shielding layer 22 does not avoid the effective photosensitive area of ​​the dummy photosensitive unit 31, the light-shielding area of ​​the light-shielding layer 22 can be further increased, thereby further improving the light-shielding effect of the light-shielding layer 22 and improving the overall black effect of the display module.

[0185] In some embodiments, referring to Figures 8a, 8b, 8c, and 8d, the notch 220 is mirror-symmetrical about the center line Y of the side bezel area 101 in which it is located; the center line Y is perpendicular to the length direction of the side bezel area 101 in which the notch 220 is located. This can improve the aesthetics of the side bezel area 101 in which the notch 220 is located and the entire display module.

[0186] In some embodiments, referring to Figures 8a, 8b, 8c and 8d, the photosensitive unit 30 corresponding to the red color resist R, the photosensitive unit 30 corresponding to the blue color resist B, the photosensitive unit 30 corresponding to the green color resist G and the dummy photosensitive unit 31 are mirror-symmetrical about the center line Y of the side frame area 101 where they are located.

[0187] In some embodiments, referring to Figures 8e and 8f, when the light-shielding layer 22 does not avoid the effective photosensitive area of ​​the dummy photosensitive unit 31, the notch 220 may not be mirror-symmetrical with the center line Y of its side frame area 101 as the axis of symmetry.

[0188] In some embodiments, referring to Figures 9a, 9b, and 9c, the photosensitive unit 30 includes a plurality of first photosensitive transistors T1, which are arranged sequentially along the extension direction of the boundary line L of the display area 100 corresponding to the side frame region 101 where they are located. The dummy photosensitive unit 31 includes a plurality of second photosensitive transistors T2, which are arranged sequentially along the extension direction of the boundary line L of the display area 100 corresponding to the side frame region 101 where they are located. The gates of the first photosensitive transistors T1 and the second photosensitive transistors T2 are electrically connected to the first... Signal line G2, the first electrode of the first photosensitive transistor T1 and the first electrode of the second photosensitive transistor T2 are electrically connected to the second signal line S1, the second electrode of the first photosensitive transistor T1 in the photosensitive unit 30 corresponding to the red color resistor R is electrically connected to the third signal line R1; the second electrode of the first photosensitive transistor T1 in the photosensitive unit 30 corresponding to the blue color resistor B is electrically connected to the fourth signal line B1; the second electrode of the first photosensitive transistor T1 in the photosensitive unit 30 corresponding to the green color resistor G is electrically connected to the fifth signal line G1; the second electrode of the second photosensitive transistor T2 is electrically connected to the sixth signal line D3.

[0189] In some embodiments, referring to Figures 9a and 9b, the first phototransistor T1 and the second phototransistor T2 have the same structure, both including a gate, a gate insulating layer GI, an active layer ACT, a first electrode S', and a second electrode D' stacked sequentially on one side of the first substrate 110. The first electrode S' and the second electrode D' are located in the same layer, and a passivation layer PVX is also disposed on the side of the first electrode S' and the second electrode D' facing away from the first substrate 110. For example, the active layer ACT is made of a-si, i.e., amorphous silicon material. The first phototransistor T1 and the second phototransistor T2 have the same photosensitive principle: when illuminated, the active layer ACT captures the energy of photons, causing the negatively charged electrons and positively charged holes in the semiconductor active layer ACT to separate. The movement of electrons forms a current, thereby realizing the photoelectric conversion process.

[0190] In some embodiments, the display module further includes a pixel circuit, which is disposed on the side of the first substrate near the second substrate. The pixel circuit is located in the display area and includes a plurality of thin-film transistors. The thin-film transistors in the pixel circuit and each film layer (including gate, active layer, first electrode and second electrode) in the first photosensitive transistor and the second photosensitive transistor are respectively fabricated by a single patterning process.

[0191] In some embodiments, referring to FIG10, the border area 101 includes a binding side border area 101a and a first side border area 101b, which are disposed opposite to each other; the photosensitive structure 3 is located in the first side border area 101b; the display module further includes a dummy load circuit 7, an electrostatic discharge circuit 8 and a reference voltage circuit 9, which are located at least in the first side border area 101b, and the dummy load circuit 7, the electrostatic discharge circuit 8, the photosensitive structure 3 and the reference voltage circuit 9 are arranged sequentially in a direction away from the display area 100. With this arrangement, the effective photosensitive area of ​​the photosensitive structure 3 is far from the display area 100. The light-shielding layer 22 is recessed in the direction away from the display area 100 at the position corresponding to the effective photosensitive area of ​​the photosensitive structure 3 to form a notch 220. This allows the light-shielding layer 22 to avoid obstructing the effective photosensitive area of ​​the photosensitive structure 3 due to manufacturing tolerances and the bonding tolerances of the cover plate 2. This ensures that the effective photosensitive area of ​​the photosensitive structure 3 can normally sense external light (such as ambient light).

[0192] Secondly, embodiments of this disclosure provide a display module, wherein, referring to Figures 11a and 11b, it includes a display area 100 and a border area 101, the border area 101 surrounding at least one side of the display area 100. The display module further includes a display panel 1 and a cover plate 2. The display panel 1 includes a first substrate 11 and a second substrate 12, the first substrate 11 and the second substrate 12 being paired. The cover plate 2 is located on the side of the second substrate 12 opposite to the first substrate 11. The first substrate 11 includes a first base 110 and a photosensitive structure 3, the photosensitive structure 3 being effective... The photosensitive area is located in the border area 101 and on the side of the first substrate 110 closest to the second substrate 12. The second substrate 12 includes a second substrate 120, a black matrix 121, and a color resist 122. The black matrix 121 and the color resist 122 are stacked sequentially on the side of the second substrate 120 closest to the first substrate 110. The black matrix 121 and the color resist 122 are located in the display area 100 and the border area 101. An opening K is formed in the black matrix 121 of the border area 101. The orthographic projection of the color resist 122 of the border area 101 onto the second substrate 120 covers the opening K. The orthographic projection of the second substrate 120 onto the first substrate 110 covers the orthographic projection of the effective photosensitive area of ​​the photosensitive structure 3 onto the first substrate 110; the cover plate 2 includes a substrate 21 and a light-shielding layer 22, the light-shielding layer 22 is located on the side of the substrate 21 closer to the second substrate 12, the light-shielding layer 22 is located in the frame area 101, and the light-shielding layer 22 at least surrounds the edge of the display area 100 on the side where the photosensitive structure 3 is located, the light-shielding layer 22 is located on the side of the effective photosensitive area of ​​the photosensitive structure 3 projected onto the substrate 21 away from the display area 100, the photosensitive structure The effective photosensitive area of ​​the photosensitive structure 3 and the orthographic projection of the light-shielding layer 22 on the substrate 21 do not overlap. The light-shielding layer 22 includes a first part 221 and a second part 222, which are connected as one unit. The orthographic projections of the first part 221 and the effective photosensitive area of ​​the photosensitive structure 3 on the substrate 21 are arranged opposite to each other. The distance m1 between the boundary of the first part 221 near the display area 100 and the boundary of the display area 100 is greater than the distance m2 between the boundary of the second part 222 near the display area 100 and the boundary of the display area 100.

[0193] The display module provided in this embodiment has several advantages. First, the light-shielding layer 22 avoids obstructing the effective photosensitive area of ​​the photosensitive structure 3 due to manufacturing tolerances and the bonding tolerances of the cover plate 2. This ensures that the effective photosensitive area of ​​the photosensitive structure 3 can normally sense external light (such as ambient light). Second, the light-shielding layer 22 does not significantly affect the overall visual appearance of the display module, such as the seamless black effect when the screen is off. Third, the light-shielding layer 22 does not obstruct incident light with a large incident angle (such as incident light with an incident angle in the range of ±30° to ±80°) that illuminates the effective photosensitive area of ​​the photosensitive structure 3. This ensures that the effective photosensitive area of ​​the photosensitive structure 3 can receive incident light at large angles, and thus ensures that the sensing curve of the effective photosensitive area of ​​the photosensitive structure 3 for incident light within a large angle range transitions smoothly with the change of the incident angle.

[0194] Thirdly, embodiments of this disclosure also provide a display device, including the display module in any of the above embodiments.

[0195] By adopting the display module in the above embodiments, it is possible not only to ensure that the effective photosensitive area of ​​the photosensitive structure in the display device can normally sense external light, but also to ensure the overall visual appearance of the display device, and to ensure that the sensing curve of the effective photosensitive area of ​​the photosensitive structure in the display device for incident light within a large angle range smoothly transitions with the change of the incident angle.

[0196] The display device provided in this disclosure can be any product or component with display function, such as an LCD panel, LCD TV, LCD billboard, monitor, mobile phone, or navigator.

[0197] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of this disclosure, and this disclosure is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and substance of this disclosure, and these modifications and improvements are also considered to be within the scope of protection of this disclosure.

Claims

1. A display module, wherein, It includes a display area and a border area, the border area surrounding at least one side of the display area. The display module also includes a display panel and a cover plate, the cover plate covering the display side of the display panel. The display panel includes a black matrix, and an opening is provided in the black matrix of the border area; The cover plate includes a substrate and a light-shielding layer, the light-shielding layer being located on the side of the substrate closer to the display panel. The light-shielding layer is located in the frame area, and the light-shielding layer at least surrounds the edge of the display area on the side where the opening is located. The light-shielding layer is located on the side of the opening's orthographic projection on the substrate that is away from the display area, and the orthographic projections of the opening and the light-shielding layer on the substrate do not overlap. The light-shielding layer has a notch at the position corresponding to the opening, and the notch is a recess in the direction away from the display area.

2. The display module according to claim 1, wherein, The cover plate also includes a partial light-transmitting layer located in the frame area. The orthographic projection of the partial light-transmitting layer on the substrate is located on the side of the orthographic projection of the opening on the substrate that is closer to the orthographic projection of the notch on the substrate. The orthographic projection of the portion of the light-transmitting layer onto the substrate at least covers the portion of the notch projected onto the substrate that is away from the display area. The light-transmitting layer does not overlap with the orthographic projection of the opening on the substrate.

3. The display module according to claim 1, wherein, The display panel also includes a second substrate. The second substrate includes a second substrate and a first film layer, wherein the first film layer is located in the border region; The first film layer is located on the side of the second substrate closer to the cover plate; The black matrix is ​​located on the side of the second substrate away from the cover plate; The orthographic projection of the first film layer on the substrate is located on the side of the orthographic projection of the opening on the substrate that is closer to the orthographic projection of the notch on the substrate; The first film layer and the orthographic projection of the opening on the substrate do not overlap. The orthographic projection of the first film layer on the substrate covers at least a portion of the area of ​​the notch that is orthographically projected onto the substrate and is located away from the display area.

4. The display module according to claim 3, wherein, The first film layer is made of a partially transparent material. The orthographic projection of the first film layer on the substrate covers the area between the orthographic projections of the opening and the notch on the substrate.

5. The display module according to claim 3, wherein, The first film layer is made of an opaque material. The orthographic projection of the first film layer on the substrate covers the local area between the orthographic projections of the opening and the notch on the substrate. The first film layer is positioned such that its orthographic projection onto the substrate, near the display area, is spaced apart from the orthographic projection of the opening onto the substrate by a first distance. The first spacing is the manufacturing tolerance of the first film layer.

6. The display module according to claim 2, wherein, The display panel further includes a first substrate and a second substrate, and the first substrate and the second substrate are paired. The cover plate is located on the side of the second substrate opposite to the first substrate. The first substrate includes a first substrate and a photosensitive structure. The photosensitive structure is located on the side of the first substrate closer to the second substrate, and the effective photosensitive area of ​​the photosensitive structure is located in the border area. The second substrate includes a second base. The black matrix is ​​located on the side of the second substrate closer to the first substrate; The orthographic projection of the opening on the first substrate covers the orthographic projection of the effective photosensitive area of ​​the photosensitive structure on the first substrate.

7. The display module according to claim 6, wherein, The distance between the orthographic projection of the edge of the notch away from the display area and the edge of the opening away from the display area onto the substrate ranges from 0.2 to 0.5 mm.

8. The display module according to claim 7, wherein, The distance between the edge of the notch near the display area and the orthographic projection of the edge of the nearest opening on the substrate ranges from 0.2 to 0.5 mm.

9. The display module according to claim 6, wherein, The distance between the orthographic projection of the side edge of the partially transparent layer near the display area and the side edge of the opening away from the display area onto the substrate ranges from 0.13 to 0.15 mm. The width of the portion of the light-transmitting layer located within the notch, along the direction away from the display area, ranges from 0.05 to 0.37 mm.

10. The display module according to claim 6, wherein, The orthographic projection of the partial light-transmitting layer on the substrate covers the notch, and the width of the overlapping area of ​​the orthographic projection of the partial light-transmitting layer and the light-shielding layer surrounding the edge of the notch on the substrate is 0.3 mm or more.

11. The display module according to claim 4, wherein, The display panel further includes a first substrate, and the first substrate and the second substrate are paired. The cover plate is located on the side of the second substrate opposite to the first substrate. The first substrate includes a first substrate and a photosensitive structure. The photosensitive structure is located on the side of the first substrate closer to the second substrate, and the effective photosensitive area of ​​the photosensitive structure is located in the border area. The black matrix is ​​located on the side of the second substrate closer to the first substrate; The orthographic projection of the opening on the first substrate covers the orthographic projection of the effective photosensitive area of ​​the photosensitive structure on the first substrate; The side boundary of the first film layer near the display area coincides with the orthographic projection of the side boundary of the opening away from the display area onto the substrate.

12. The display module according to claim 3, wherein, The orthographic projection of the first film layer on the substrate covers the notch, and the width of the overlapping area of ​​the orthographic projection of the first film layer and the light-shielding layer surrounding the edge of the notch on the substrate is 0.13 mm or more.

13. The display module according to claim 2, wherein, The light transmittance of the partially transparent layer ranges from 65% to 85%.

14. The display module according to claim 6 or 11, wherein, The second substrate also includes color resist. The color resist is located on the side of the black matrix closer to the first substrate. The orthographic projection of the color resist in the border area onto the second substrate covers the orthographic projection of the opening onto the second substrate.

15. The display module according to claim 14, wherein, The photosensitive structure includes multiple photosensitive units; One photosensitive unit corresponds to one opening, and the plurality of photosensitive units correspond to a plurality of different openings; The spacing between adjacent edges of adjacent openings is greater than 10 μm.

16. The display module according to claim 15, wherein, One photosensitive unit corresponds to one color of color resist, and the multiple photosensitive units correspond to different colors of color resist; The color resistors include red, blue, and green color resistors. The red color resist, the blue color resist, and the green color resist are arranged sequentially along the extension direction of the display area boundary line corresponding to the side of the frame area on which they are located; The photosensitive unit corresponding to the red color resist, the photosensitive unit corresponding to the blue color resist, and the photosensitive unit corresponding to the green color resist are arranged sequentially along the extension direction of the display area boundary line corresponding to the frame area on their respective sides.

17. The display module according to claim 16, wherein, The first substrate further includes at least one dummy photosensitive unit located in the border area and on the side of the first substrate closer to the second substrate. The at least one dummy photosensitive unit is arranged sequentially with the photosensitive unit corresponding to the red color resist, the photosensitive unit corresponding to the blue color resist, and the photosensitive unit corresponding to the green color resist along the extension direction of the display area boundary line corresponding to the frame area on its side; The orthographic projection of the black matrix onto the first substrate covers the effective photosensitive area of ​​the dummy photosensitive unit, and the orthographic projection of the color resist onto the first substrate does not overlap with the orthographic projection of the effective photosensitive area of ​​the dummy photosensitive unit.

18. The display module according to claim 17, wherein, The effective photosensitive area of ​​the dummy photosensitive unit and the orthographic projection of the light-shielding layer on the substrate at least partially overlap; Alternatively, the effective photosensitive area of ​​the dummy photosensitive unit does not overlap with the orthographic projection of the light-shielding layer on the substrate.

19. The display module according to claim 18, wherein, The gap is mirror-symmetric with the center line of the border area on its side as the axis of symmetry. The center line is perpendicular to the length direction of the border area on the side where the notch is located.

20. The display module according to claim 18, wherein, The photosensitive unit includes a plurality of first photosensitive transistors, which are arranged sequentially along the extension direction of the display area boundary line corresponding to the frame area on their respective sides. The virtual photosensitive unit includes a plurality of second photosensitive transistors, which are arranged sequentially along the extension direction of the display area boundary line corresponding to the frame area on the side where they are located. The gates of the first photosensitive transistor and the second photosensitive transistor are electrically connected to the first signal line. The first electrode of the first photosensitive transistor and the first electrode of the second photosensitive transistor are electrically connected to the second signal line. The second electrode of the first photosensitive transistor in the photosensitive unit corresponding to the red color resist is electrically connected to the third signal line; The second electrode of the first photosensitive transistor in the photosensitive unit corresponding to the blue color resist is electrically connected to the fourth signal line; The second electrode of the first photosensitive transistor in the photosensitive unit corresponding to the green color resist is electrically connected to the fifth signal line; The second electrode of the second photosensitive transistor is electrically connected to the sixth signal line.

21. A display module, wherein, It includes a display area and a border area, the border area surrounding at least one side of the display area. The display module also includes a display panel and a cover plate, the cover plate covering the display side of the display panel. The display panel includes a photosensitive structure, and the effective photosensitive area of ​​the photosensitive structure is located in the bezel area. The cover plate includes a substrate and a light-shielding layer, the light-shielding layer being located on the side of the substrate closer to the display panel. The light-shielding layer is located in the frame area, and the light-shielding layer at least surrounds the edge of the display area on the side where the photosensitive structure is located. The light-shielding layer is located on the side of the effective photosensitive area of ​​the photosensitive structure that is projected onto the substrate away from the display area. The effective photosensitive area of ​​the photosensitive structure and the projected image of the light-shielding layer onto the substrate do not overlap. The light-shielding layer has a notch at the position corresponding to the effective photosensitive area of ​​the photosensitive structure, and the notch is a recess in the direction away from the display area.

22. The display module according to claim 21, wherein, The photosensitive structure includes multiple photosensitive units; The plurality of photosensitive units are arranged sequentially along the extension direction of the display area boundary line corresponding to the frame area on their respective sides; The plurality of photosensitive units are located at the middle or end of the boundary line of the display area on their respective sides.

23. The display module according to claim 22, wherein, The shape of the middle portion of the boundary line of the display area corresponding to the frame area on the side where the photosensitive unit is located includes a straight line, a semi-circular arc, or a parabola. The plurality of photosensitive units are located at the middle or end positions of the middle portion of the boundary line of the display area on their respective sides.

24. The display module according to claim 21, wherein, The border area includes a binding side border area and a first side border area, which are arranged opposite to each other. The photosensitive structure is located in the first side frame area; The display module further includes a dummy load circuit, an electrostatic discharge circuit, and a reference voltage circuit, at least located in the first side frame area. The dummy load circuit, the electrostatic discharge circuit, the photosensitive structure, and the reference voltage circuit are arranged sequentially in a direction away from the display area.

25. A display device, wherein, Includes the display module as described in any one of claims 1-24.

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